Like Salazar Slytherin, its founder, Slytherin house values ambition, cunning, resourcefulness, and pure blood heritage. Most Slytherin students display a high level of Machiavellianism. The book also suggests that the hunger for power is a characteristic of Slytherins. The animal representing Slytherin is the serpent, and the house's colours are green and silver. The Bloody Baron is the house ghost. According to Rowling, Slytherin corresponds roughly to the element of water. The Slytherin dormitories and common room are reached through a bare stone wall in the dungeons. The Slytherin common room is a long, low, dungeon-style room, located under the Hogwarts lake and furnished with green lamps and chairs.